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WE Data Europe’s Interview with Smart Water Magazine

Smart Water Magazine - WE Data Europe Article (Water Resilience Digitalisation)
14.01.2026

Digitalisation is rapidly becoming one of the most important levers for strengthening Europe’s water resilience and at WE Data Europe, we believe our industry is ready to deliver. That’s the message we shared in our recent feature in Smart Water Magazine, where we discussed how data‑driven water management can help utilities, policymakers, and building owners respond to growing water stress across the continent.

In the article, we highlight a simple truth: you can’t manage what you don’t measure. Smart metering, submetering, and digital monitoring give water managers the real‑time insights they need to detect leaks early, understand consumption patterns, and optimise systems at scale. These tools are no longer “future technologies”, they are mature, proven solutions already delivering measurable savings across Europe.

But unlocking their full potential requires a supportive regulatory framework, consistent implementation across regions, and a shared commitment to digital transformation. As an industry, we stand ready to support this shift with the expertise, technology, and data needed to build a more resilient water future.

You can find the first part of the article below. If you’re interested in how digitalisation can strengthen Europe’s water systems and the role our sector can play, we invite you to read the full article on Smart Water Magazine’s website here.


 

As Europe faces growing challenges around water scarcity and resource efficiency, the digital transformation of the water sector has never been more urgent. WE Data Europe, the European Association for Energy and Water Data Management, unites companies and organisations leading the way in smart metering and data-driven resource management. In this interview, Markus Weidling, CEO, and Sofia Lettenbichler, Managing Director of WE Data Europe, discuss how digital metering empowers both utilities and consumers to use water more efficiently. They share insights from a new pan-European study showing that smart water metering can reduce household consumption by up to 25%, highlighting how data, technology, and policy alignment can drive Europe’s transition towards a more sustainable and resilient water future.

WE Data Europe, the European Association for Energy and Water Data Management, brings together companies and organisations at the forefront of digital metering and data management across Europe. Could you briefly explain WE Data Europe’s mission and how it supports the digital transformation of the water sector?

Markus Weidling: At WE Data Europe, our mission is simple but powerful: you can’t manage what you don’t measure. We represent the companies that make it possible to collect, analyse, and act on energy and water data in buildings. By promoting the rollout of smart water and energy metering, we accelerate Europe’s transition towards more efficient, sustainable, and resilient resource management.

Sofia Lettenbichler: The digital transformation of the water sector starts with data. Digital metering enables real-time insights into how water is used, helping consumers understand and optimise their consumption. Our role is to bridge innovation and policy so that these solutions can scale across Europe.” […]

Techem

Techem is a leading service provider for smart and sustainable buildings. The company’s services cover energy management and resource conservation, residential health and process efficiency in real estate. Founded in 1952, the company is now active in 18 countries with a strong focus on the EU, where we are present in 15 member states. Techem has over 4.000 employees and services more than 13 million dwellings. Techem offers efficiency improvements along the entire value chain of heat and water in real estate. As the market leader in remote radio detection of energy consumption in homes, Techem continues to drive networking and digital processes in real estate. Modern radio smoke detectors and modern multi sensor devices with remote inspection and services related to improving drinking water quality in properties complement the solution portfolio for the housing industry.

Ocea
Ocea Smart Building is a leading French company specializing in sub-metering for collective housing. With 550 employees and 29 agencies across the country, the company offers solutions for sub-metering on cold water, hot water, and heating for condominiums and social landlords. Ocea provides remote reading solutions along with data analysis and processing platforms. Additionally, Ocea offers complementary IoT solutions and financed solutions for replacing gas or fuel collective boilers with heat pump systems, particularly geothermal ones.
Ista

We give buildings a future. We make this happen with products and services that help to reduce the CO2 emissions of buildings. We manage data and processes that make properties more climate-friendly, safer and more comfortable. The base for our products and services is digital. We ensure that we make it easy for everyone to switch to our sustainable technologies. This allows everyone to make their contribution to climate protection.

We already have over 45 million wireless devices in operation around the globe and develop solutions for energy-efficient and futureproof buildings. We employ over 6,300 people across 20 countries and our products and services are used in over 14 million homes and commercial properties worldwide – by more than 460,000 customers. In 2024, the entire Ista Group recorded sales of EUR 1,220 million euros.

Kalorimeta

KALO (Kalorimeta GmbH) is the partner for the smart energy transition in residential properties. As a Hamburg-based pioneer in the digitalization of building infrastructure with over 60 years of experience, we provide end-to-end solutions for the housing industry to make energy consumption transparent and energy and CO₂ reduction actionable.

Our broad service portfolio is ranging from submetering and smart metering to digital services that provide building owners and managers with the necessary data to comply with legal requirements, optimize energy efficiency, and significantly reduce CO₂ emissions. Our product portfolio is complemented with smoke detector services as well as smart heating solutions and intelligent central heating control systems. With our modern gateway infrastructure, we not only connect our metering devices but also integrate IoT applications for energy transition in buildings like smart heating, e-mobility and solar panel infrastructure.

Brunata Metrona

As a partner to the property industry, the BRUNATA-METRONA Group enables efficient and responsible use of the environment and resources. Transparent consumption and energy data form the basis for intelligent and future-oriented energy management to maintain the value of buildings. We help to operate properties in a resource-efficient and future-proof manner, use energy efficiently, reduce CO2 emissions in buildings and cut energy costs. In doing so, we play a leading role in our industry by providing the highest quality and customised products for our customers. Our innovative solutions, services and expertise have made us a trusted partner to the building industry for more than 70 years.

Brunata Denmark

Brunata – Smart Energy – Solutions for a Greener Future

Brunata is dedicated to transforming our buildings, homes, and cities into smarter environments.

Wherever people reside, we diligently measure heat consumption, monitor water usage, manage energy, oversee the indoor climate, protect properties and much more. We are committed to delivering intelligent solutions for at sustainable future, leveraging over a century of expertise in the metering industry.

With a history spanning over 100 years, our roots are firmly Danish. Today, Brunata is part of the German-owned Brunata-Minol-ZENNER Group, which employs over 4,200 individuals worldwide.

Our headquarter is situated in Herlev, Denmark, where we collaborate closely with our subsidiaries and partners across most of Europe.

Brunata has transformed into a service provider, offering meters with services that simplify our customers’ daily operation – e.g., our digital platform Brunata Online – the online uses interface for administrators, residential buildings, utilities, sub-users and residents.